The CCTV report triggered a slobber, but the core of the problem is not whether the shielding suit (radiation suit) is useful, but whether the electromagnetic environment of our daily work life is safe.
LiteHome`s innovative design of LED Grille Light overturns the concept of commercial Linear Lighting. It can quickly replace traditional 2xT8 tubes lamps and traditional track lights. It also takes into account the function of spotlights to achieve precise angle adjustment without glare (UGR<16). More importantly, LiteHome takes into account the difficulty of replacement and installation. Our Grille Linear lights are compatible with commercial AC220-240V Track rails, which can be used as a fool-proof replacement. Users do not need to hire a professional electrician to replace the lamps and save every time. Electrician fee of 90-150USD per hour. Every design concept of LiteHome is placed in the situation for the users to consider seriously.
Supermarket Lighting,Shelf Lighting,Grille Light,Area Lighting,Commercial Lighting Suppliers SHENZHEN LITEHOME OPTOELECTRONIC TECHNOLOGY CO., LTD. , https://www.litehomelight.com
In any case, this dispute is bound to accelerate the development and implementation of relevant industry standards.
A news report from CCTV has pushed the industry represented by the Shanghai Anti-Electromagnetic Radiation Association, which has only been established for more than half a year, to the forefront.
On December 17, CCTV's "Truth Investigation" column made a test on the hot radiation suits on the market every year. The results show that the radiation protection suit can not reduce the electromagnetic radiation, but will lead to an increase in the amount of radiation. Once the show was aired, it caused an uproar in all walks of life.
On December 22nd, the Shanghai Anti-Electromagnetic Radiation Association held a media briefing in Beijing to respond to the incident and claimed that CCTV's experiment was not rigorous.
    What is the truth?
Anti-radiation "scam"?
On October 30, 2011, a netizen asked in the microblog of the famous counterfeiter Fang Zhouzi, "There are no scientific basis for the more than 600 sets of clothes for pregnant women to prevent radiation in the market. Please give pointers." Responding, "I used to say that this is a unique commercial scam in China. The electromagnetic radiation generated by everyday electrical appliances will not affect human health. Even if it has an effect, the so-called radiation protection suit will not be shielded. Professional radiation suits are available."
I don't know if CCTV's reporters got inspiration from Fang Zhouzi's Weibo. In CCTV's December 17th program, "The Truth Investigation," an experiment was conducted on radiation protection suits.
The CCTV reporter "has found a domestic professional electronic testing laboratory with the recommendation of the Chinese Academy of Sciences to test the radiation protection capability of a metal fiber radiation protection suit." In the program, engineer Chen Feng made two In the small experiment, the first experiment was to test the ability of the radiation protection suit to block a single electromagnetic wave.
The experiment is very simple. Chen Feng uses a transmitting antenna and a receiving antenna to establish a signal transmission path. After calibrating the instrument, Chen Feng blocked the radiation protection suit in front of the receiving antenna. The instrument display signal is filtered by 90%, "that is, it can block 90% of the radiation."
"But the problem is that the source of radiation in real life is not single, and it is not in one direction. So in the face of complex realities, does radiation protection have an effect?" In the face of reporters' questions, Chen Feng conducted the second Radiation protection test to test the radiation resistance of radiation protection suits in complex electromagnetic environments.
This time, the radiation suit is placed on a shelf and then exposed to radiation from multiple sources. Chen Feng inserted the test instrument into the radiation protection suit, and the results showed that the radiation peak inside the radiation suit was enhanced.
"According to the principle of electromagnetic radiation, in the case of not wearing radiation protection suits, radiation will be irradiated to the human body, the human body will absorb a small part, and then most of the radiation will be reflected out. But if wearing radiation protection suit, radiation It will be injected from all the gaps in the lower end of the clothes, cuffs, etc., but it can't be reflected out. Instead, it will be superimposed and reflected in the radiation suit, and the radiation intensity will increase on the human body." Chen Feng explained the result. Road.
Only when a person wears a fully enclosed shielding suit like a spacesuit can the human body not touch electromagnetic radiation, but it is obviously unrealistic in daily life.
At the end of the program, CCTV interviewed the science writer of the fruit shell, the skinny camel. The latter said that an article published in an authoritative medical journal in 1991 showed that daily radiation does not pose a hazard to the human body. Over the years, there has been no updated view in the academic world to overturn this conclusion.
"The market-selling maternity radiation suits do not have the effect of preventing radiation, and the daily radiation does not pose a hazard to the human body." This short 5-minute program finally conveyed such information to us.
It is conceivable that the show will cause an uproar once it is broadcast, and it will also push the radiation protection industry to the whirlpool of public opinion.
In response to the market, many consumers demanded a return, and some department stores also demanded that the products be removed. What is more, a consumer in Tianjin took a radiation suit company to court for fraud.
"This 'anti-electromagnetic radiation service incident' has caused a great impact on the entire anti-electromagnetic radiation industry," said Shang Sishan, secretary general of the Shanghai Anti-Electromagnetic Radiation Association.
Truth seeking
In nature, radiation is roughly divided into two types, one is high-energy ionizing radiation, such as hospital X-ray or nuclear radiation, ionizing radiation is more harmful to the human body; the other is non-ionizing radiation, that is, electromagnetic radiation, Large electromagnetic radiation is dangerous to the human body and was first embodied in the radar.
China's research on anti-electromagnetic radiation suits began in the 1960s, mainly for the military industry research and medical and health fields. Until the 1990s, with the popularity of household appliances and the advancement of textile technology, civilian anti-electromagnetic radiation clothing began to enter the market, which is now the hot radiation suit on the market.
But is there the need to wear radiation protection suits in daily life?
On this issue, the views of the parties are different.
The skinny camel said that unless it is X-ray in the industrial sector, it will cause great damage to the human body. Under normal circumstances, the use of computers, mobile phones, induction cookers and other electrical appliances on the human body is minimal.
On this issue, Professor Liu Wenkui, a researcher on China's national defense electromagnetic radiation, said: "Since the 20th century, electromagnetic technology has developed rapidly, and electromagnetic technology applications have spread all over the world. This has led to more and more complex electromagnetic fields in space environments. , the formation of electromagnetic pollution, if a person is in the excessive electromagnetic radiation field for a long time, and is close to the radiation source, it is bound to affect health."
At the same time, there are also relevant experts who put forward relatively pertinent opinions.
Wang Sumei, deputy director of the Department of Obstetrics and Gynecology, Beijing Chaoyang Hospital, told reporters that electromagnetic radiation in daily life will not cause too much impact on the human body, but pregnant women, as sensitive people, should be consciously away from some strong radiation appliances, such as using less mobile phones. Keep away from working microwave ovens, etc. Don't work in front of the computer for a long time.
Since sensitive people need to pay attention to protective electromagnetic radiation, will it be counterproductive to wear radiation protection suits?
Soon after the CCTV report was broadcast, nearly 60 anti-radiation brand companies such as Youjia and October Mommy sent samples to Shanghai Metrology and Testing Technology Research Institute, East China National Metrology and Testing Center and China Shanghai Testing Center for joint testing. The certificate is "innocent."
On December 22nd, the Shanghai Anti-Electromagnetic Radiation Association held the "Anti-electromagnetic radiation media briefing session" in Beijing, and made a public response to this issue for the first time.
"The body's absorption of electromagnetic waves will have a thermal effect, which is widely recognized. As to whether non-thermal effects and non-thermal effects will have an impact on human health? At present, there is no unified conclusion in the world." Professor Lu Yinghua of China University of Posts and Telecommunications said, "But For some sensitive people, such as pregnant women, it should be possible to take as little contact as possible with electromagnetic sources, and it is beneficial for them to take some shielding measures such as wearing radiation protection suits to reduce the intensity of electromagnetic radiation."
Then why did Chen Feng’s experiment show that wearing radiation protection clothing would increase radiation?
Li Guodong, senior engineer of Shanghai Institute of Metrology and Testing Technology, said, "He (Chen Feng) puts the radiation protection suit on a shelf, and the gap between the clothes and the shelf is very large, which causes many electromagnetic waves to shoot from a large gap. Into, the reflection is constantly carried out inside, but if it is worn by people, the electromagnetic radiation entering the radiation protection suit from the gap of the cuff is very small, and the energy of each reflection in the clothes will be reduced to heat until the radiation disappears. This part of the heat will be absorbed by the body, but it is harmless to the human body."
In addition, he also said that the test electromagnetic radiation test should be carried out in a professional elliptical closed electromagnetic wave dark room. "This will make the electromagnetic field of the space more uniform and meet the standards of testing experiments."
"Where can Chen Feng do the experiment? He is experimenting in an ordinary room, the instrument is piled up indoors, and the electromagnetic field is scattered." Li Guodong believes that this is another reason why Chen Feng's experimental data is not scientific.
Therefore, the Shanghai Anti-Electromagnetic Radiation Association believes that Chen Feng’s experiment is “the result of non-professional use of non-professional methods in non-professional situations. We can tell consumers responsibly that anti-electromagnetic radiation suits shield electromagnetic waves. It is effective. It is an extremely irresponsible behavior to issue a so-called anti-electromagnetic radiation suit is a commercial scam."
In response to the Shanghai Anti-Electromagnetic Radiation Association, Chen Feng Lab recently opened a blog and Weibo, saying: "The special emphasis in the news is only a special experimental setup, which is the reflection of electromagnetic waves after entering the shielding suit. It is definitely not a signal. The energy is increased. This is a relative value, which is the power comparison between the front and the back of the receiving antenna."
For the question that "radiation suits may be worse than not wearing them," Chen Fengbowen said, "Although this situation rarely occurs, it is possible that the film is played by two extreme experiments to describe this situation." He also admitted that "the experiment in the program is not rigorous" and "there is no standard experimental conclusion."
Since daily wear of radiation protection suits does not enhance radiation, is radiation protection clothing really effective for shielding electromagnetic radiation?
According to a person from the Shanghai Anti-Electromagnetic Radiation Association, the current radiation protection suits are mainly composed of metal fiber and silver ion, which can effectively shield electromagnetic radiation.
Lu Fumin, chief engineer of the Shanghai Institute of Metrology and Testing Technology, said, "We have conducted anti-electromagnetic radiation tests on various brands of maternity radiation suits on the market, including slings, vests, etc., and found that the radiation protection suits on the market can cover most of the Electromagnetic radiation. When we did the test, we found that the radiation protection suit for pregnant women mainly protects the heart part of the pregnant mother and the belly part (that is, the position of the baby). The effect on the edge is weak, and the protective effect is related to the fabric and style of the clothing. closely related."
Standard torture
Shortly after the Shanghai Anti-Electromagnetic Radiation Association responded, some netizens tweeted: "After finishing food experts and chemical experts, this time, the problem of radiation protection suits, and forced many people to learn to be physicists."
In fact, CCTV, which found the problem, "publicly and publicly", responded to the problem of the Shanghai Anti-Electromagnetic Radiation Association. Most consumers do not have strong physical knowledge. For consumers, Chen Feng’s experiments are not rigorous, and Shanghai’s claims may not be credible.
The reason for this is the lack of industry standards.
Peng Ruiyun, director of the Laboratory of Experimental Pathology at the Institute of Radiation and Radiation Medicine, Academy of Military Medical Sciences, told the reporter: "The commercially available radiation protection suits should be electromagnetic radiation generated by daily electrical appliances such as mobile phones and microwave ovens. These radiations should be said to have a certain impact on the human body. But so far, China has no clear statement about electromagnetic radiation, that is, how much electromagnetic radiation will cause harm to the human body."
In fact, with the development of society, various household appliances have entered our lives and work more. According to statistics, at present, the average household electrical appliances in each household in China is 26, and the daily radiation environment faced by people is relatively complicated. .
In 1988, the State approved the implementation of the "Electromagnetic Radiation Protection Regulations", marking the limits of electromagnetic radiation protection, the management of electromagnetic radiation sources and the considerations for electromagnetic radiation monitoring. In 2009, the recommended standards for microwave shielding protective clothing were also introduced. .
Huang Jianhua, spokesperson of the Shanghai Anti-Electromagnetic Radiation Association, said: "In recent years, the relevant departments of the state have done a lot of work in the standardization of radiation-proof textiles, and have developed many related issues concerning yarns, fabrics, test methods, occupational radiation protection garments, etc. Standards. These standards have become the main norms in the design, development and production of products within the industry."
However, the problem is that although the "Electromagnetic Radiation Protection Regulations" have standards for the radiation of each electrical appliance, there is no corresponding standard and detection of how many radiations are accumulated after a large number of electrical appliances are concentrated in one room. Recommended standards for microwave shielding protective clothing. Nor is it a mandatory national standard for the entire radiation protection product. That is to say, the current hot radiation suits on the market are still in the standard vacancy situation.
It is reported that the standards for anti-radiation products currently on the market are determined by the manufacturers themselves, and the standards set by each enterprise are different. As the market expands year by year, many companies maliciously exaggerate the radiation impact, product material effects and exaggerated publicity are seriously inconsistent, resulting in the current market competition in the radiation protection clothing industry in a chaotic, disorderly state.
As a functional clothing product, the radiation protection clothing business advertised that "common metal fiber can withstand 99.99% of radiation, while silver ions can withstand up to 99.9999% of radiation", but because there is no supervision and inspection by relevant departments, Whether the effect is really as the merchant said, no one can tell.
"Before the national unified industry standards were not introduced, the industry competition was chaotic, and consumers became confused." Liu Ruohua, associate professor of materials science at Donghua University, hopes that the emergence of disputes will at least promote the improvement of the industry's quality.
People hope that the introduction of the standard can solve the key problems of "how much electromagnetic radiation is harmful to the human body", "what kind of situation should wear radiation protection clothing", "specific requirements of radiation protection clothing products", etc., so as to fundamentally solve similar problems. Disputes, at the same time standardize and guide the healthy and orderly development of the radiation protection service industry.
Therefore, whether from the perspective of the radiation protection industry itself or from the perspective of consumers, the formulation of relevant industry standards is an urgent task.
In this regard, Gu Hongwei, a member of the National Garment Standardization Technical Committee, said that “the radiation protection service standard is being drafted. Now it is the technical research stage. It also requires argumentation and discussion. The relevant departments are formulating professional parameters. The national review will be officially released."
In any case, this dispute will inevitably accelerate the formulation and implementation of relevant industry standards, which will be a new beginning for the radiation protection service industry.
